Systems and method for management and delivery of orthodontic treatment

ABSTRACT

The present invention provides systems and methods of managing delivery of an orthodontic treatment plan using treatment guidelines, instructions and appointment planning tools customized to the individual patient being treated. A method includes, e.g., generating a treatment plan for a patient, generating a customized set of treatment guidelines, providing the set of customized treatment guidelines to the practitioner; and providing a set of orthodontic appliances to the practitioner.

CROSS-REFERENCES TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.11/760,689, filed Jun. 8, 2007 (Attorney Docket No. 22773-761.201), thefull disclosure of which is incorporated herein by reference in itsentirety.

The present application is related to U.S. application Ser. No.11/760,705, entitled “Treatment Progress Tracking And Recalibration,”filed on Jun. 8, 2007 (Attorney Docket No. 22773-760.201); U.S.application Ser. No. 11/760,701, entitled “Treatment Planning AndProgress Tracking Systems and Methods,” filed on Jun. 8, 2007 (AttorneyDocket No. 22773-759.201); and U.S. application Ser. No. 11/760,612,entitled “System And Method For Detecting Deviations During The CourseOf An Orthodontic Treatment To Gradually Reposition Teeth,” filed onJun. 8, 2007 (Attorney Docket No. 22773-770.201); the full disclosuresof which are incorporated herein by reference in their entirety.

BACKGROUND OF THE INVENTION

The present invention relates generally to the field of orthodontics,and more particularly to systems and methods of managing delivery of anorthodontic treatment plan using treatment guidelines, instructions andappointment planning tools customized to the individual patient beingtreated.

An objective of orthodontics is to move a patient's teeth to positionswhere function and/or aesthetics are optimized. Traditionally,appliances such as braces are applied to the patient's teeth by anorthodontist and the set of braces exerts continual force on the teethand gradually urges them toward their intended positions. Over time andwith a series of clinical visits and adjustments to the braces, theorthodontist eventually adjusts the appliances to move the teeth towardtheir final destination.

More recently, alternatives to conventional orthodontic treatment withtraditional affixed appliances (e.g., braces) have become available. Forexample, systems including a series of preformed aligners have becomecommercially available from Align Technology, Inc., Santa Clara, Calif.,under the tradename Invisalign® System. The Invisalign® System includesdesigning and/or fabricating multiple, and sometimes all, of thealigners to be worn by the patient before the aligners are administeredto the patient and used to reposition the teeth (e.g., at the outset oftreatment). Often, designing and planning a customized treatment for apatient makes use of computer-based 3-dimensional planning/design tools,such as ClinCheck® from Align Technology, Inc. The design of thealigners can rely on computer modeling of a series of planned successivetooth arrangements, and the individual aligners are designed to be wornover the teeth and elastically reposition the teeth to each of theplanned tooth arrangements.

Recent advances in orthodontic treatment, including availability of thetreatment systems discussed above, have made orthodontic treatmentoptions available to a wide variety of patients and dentalpractitioners. Unfortunately, barriers to more wide-spread use of suchtreatment options still exist, thereby preventing both patients anddental practitioners from access to orthodontic treatment technologythey desire. One such barrier includes more wide-spread use oforthodontic treatment technology to dental practitioners with limitedexperience in orthodontics. For example, many general dentalpractitioners with limited knowledge or exposure to orthodontics may beinterested in learning orthodontic techniques and providing suchtreatment to patients, but may lack confidence in their abilities toeffectively deliver treatment and/or achieve predictable outcomes.Accordingly, improved methods and techniques are needed for facilitatingorthodontic practice among practitioners with limited experience inorthodontics and will enhance treatment options and improve efficacy inpatients in need of such treatment.

BRIEF SUMMARY OF THE INVENTION

The present invention provides improved systems and methods of managingdelivery of an orthodontic treatment plan using treatment guidelines,instructions and appointment planning tools customized to the individualpatient being treated. The customized information provided according tothe present invention can be offered in support or addition toorthodontic treatment systems currently available, and additionallyprovides to a treating practitioner specifically customized and tailoredappointment guidelines and instructions regarding recommendedpatient/practitioner appointments as well as specific tasks that shouldbe accomplished at identified appointments. Information and guidelinesaccording to the invention techniques provides numerous advantages inthat they provide more customized and specific guidelines andinstructions for administering treatment and can be used, for example,to more effectively manage delivery of orthodontic treatment andincrease treatment efficacy. For example, the inventive techniques moreadvantageously assist certain practitioners, including those that maylack experience and/or confidence in delivering orthodontic treatment ormay be concerned about an ability to achieve a predictable or desiredoutcome in orthodontic care, as well as practitioners desiring morecustomized guidelines for a given treatment plan.

Thus, in one aspect, the present invention provides methods and systemsof managing delivery of an orthodontic treatment plan. Such a method caninclude generating a treatment plan for a patient, generating acustomized set of treatment guidelines, e.g., corresponding to a phaseof the treatment plan, and providing the set of customized treatmentguidelines as well as a set of orthodontic appliances to thepractitioner. Systems for managing delivery of an orthodontic treatmentplan is provided. A system can include a computer coupled to a server,the computer comprising a processor and a computer readable medium. Thecomputer readable medium of the system can include instructions which,if executed, cause the computer to generate a treatment plan for apatient, generate a set of customized treatment guidelines, and generatedigital models for each appliance of a set of orthodontic appliances fortreating the patient according to the treatment plan.

For a fuller understanding of the nature and advantages of the presentinvention, reference should be made to the ensuing detailed descriptionand accompanying drawings. Other aspects, objects and advantages of theinvention will be apparent from the drawings and detailed descriptionthat follows.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a jaw together with an incremental positioningadjustment appliance according to an embodiment of the presentinvention.

FIG. 2 includes a flow chart illustrating managing delivery of anorthodontic treatment plan including customized treatment guidelinesaccording to an embodiment of the present invention.

FIG. 3 shows generating a treatment plan according to an embodiment ofthe present invention.

FIG. 4 is a screen shot illustrating a graphical representation ofelectronically provided guidelines corresponding to a treatment planaccording to an embodiment of the present invention.

FIG. 5A is a screen shot showing a graphical representation ofelectronically provided guidelines according to another embodiment ofthe present invention.

FIG. 5B is a screen shot showing a graphical representation ofelectronically provided guidelines corresponding to a treatment planaccording to another embodiment of the present invention.

FIG. 6 is a block diagram illustrating a system for generatingappliances in accordance with methods and processes of the presentinvention.

DETAILED DESCRIPTION OF THE INVENTION

The present invention provides improved systems and methods of managingdelivery of an orthodontic treatment plan using treatment guidelines,instructions and appointment planning tools customized to the individualpatient being treated. The systems and methods of the present inventioninclude generating a treatment plan for a patient and additionallyproducing one or more sets of treatment guidelines specificallycustomized to the patient being treated. The customized treatmentguidelines are designed to be provided to a dental practitioner in orderto provide enhanced instruction and guidance for delivering theorthodontic treatment to the patient. By customizing the guidelines tothe specific patient, the present invention advantageously assistscertain practitioners, including those that may lack experience and/orconfidence in delivering orthodontic treatment or may be concerned aboutan ability to achieve a predictable or desired outcome in orthodonticcare, and additionally enhances treatment efficacy.

Systems and methods of managing delivery of an orthodontic treatmentplan using treatment guidelines, instructions and appointment planningtools customized to the individual patient according to the presentinvention can be included in a variety of orthodontic treatmentregimens. For example, the customized instructions and appointmentplanning tools can be optionally included and incorporated into otheraspects of treatment according to the Invisalign® System. Treatment canbe pre-planned for administering to a patient in a series of one or morephases, with at least some of the phases each including a set ofappliances that are worn successively by the patient to reposition theteeth through planned arrangements and eventually toward a selectedfinal arrangement. As treatment will typically be planned as a series oftreatment phases, the planned phases can each include customizedtreatment guidelines tailored to that particular phase, which are usefulin helping manage delivery and treatment of the patient with the set ofappliances. In this way, customized appointment planning and instructionaccording to the present invention can be integrated with theorthodontic treatment process for improved treatment delivery and/orefficacy.

As set forth above, customized set of treatment guidelines can beprovided to the practitioner and designed to correspond to a particularphase of the treatment plan, which can include a corresponding set ofappliances that are administered to the patient. Along with the set(s)of appliances that provided to the treating practitioner according to atreatment phase, the practitioner will receive a copy of a customizedset of treatment guidelines that will identify all the recommendedand/or necessary appointments as well as corresponding instructions ortasks to be completed at each of the appointments. The particularappointments, general or specific timing of the appointments, as well asspecific tasks that should be performed at each appointment arecustomized to the individual patient and typically account forpatient-specific factors such as the positioning of the patient's teeth,desired movements, treatment goals, and other clinical considerations.

The present system and methods can by used along with any orthodontictreatment methodology, including patient removable appliances as well asfixed appliances such as more traditional orthodontic brackets andwires, and can even include other dental treatments. More typically,systems and methods of the present invention will be used in conjunctionwith patient removable, incremental adjustment appliances. FIG. 1 showsone adjustment appliance 10 which is worn by the patient in order toachieve an incremental repositioning of individual teeth in the jaw 12as described generally above. The appliance can include a shell (e.g.,polymeric shell) having teeth-receiving cavities that receive andresiliently reposition the teeth. Such appliances, including thoseutilized in the Invisalign® System, are described in numerous patentsand patent applications assigned to Align Technology, Inc. including,for example in U.S. Pat. Nos. 6,450,807, and 5,975,893, as well as onthe company's website, which is accessible on the World Wide Web (see,e.g., the url “align.com”).

As set forth in the prior applications, each appliance may be configuredso that its tooth-receiving cavity has a geometry corresponding to anintermediate or final tooth arrangement intended for the appliance. Thepatient's teeth are progressively repositioned from their initial tootharrangement to a final tooth arrangement by placing a series ofincremental position adjustment appliances over the patient's teeth. Theadjustment appliances can be generated all at the same stage or in setsor batches, e.g., at the beginning of a stage of the treatment, and thepatient wears each appliance for a set period of time or until thepressure of each appliance on the teeth is minimal or can no longer befelt. A plurality of different appliances (e.g., set) can be designedand even fabricated prior to the patient wearing any appliance of theplurality. At that point, the patient replaces the current adjustmentappliance with the next adjustment appliance in the series until no moreappliances remain. The appliances are generally not affixed to the teethso as to require removal by a practitioner (e.g., patient removable) andthe patient may place and replace the appliances at any time during theprocedure. The final appliance or several appliances in the series mayhave a geometry or geometries selected to overcorrect the tootharrangement, i.e., have a geometry which would (if fully achieved) moveindividual teeth beyond the tooth arrangement which has been selected asthe “final.” Such over-correction may be desirable in order to offsetpotential relapse after the repositioning method has been terminated,i.e., to permit movement of individual teeth back toward theirpre-corrected positions. Over-correction may also be beneficial to speedthe rate of correction, i.e., by having an appliance with a geometrythat is positioned beyond a desired intermediate or final position, theindividual teeth will be shifted toward the position at a greater rate.In such cases, the use of an appliance can be terminated before theteeth reach the positions defined by the appliance.

Referring to FIG. 2, a process 20 according to the present invention isillustrated. Individual aspects of the process are discussed in furtherdetail below. The process includes generating a treatment plan forrepositioning a patient's teeth (Step 22). Briefly, a treatment planwill include obtaining data comprising an initial arrangement of thepatient's teeth, which typically includes obtaining an impression orscan of the patient's teeth prior to the onset or start of treatment.The treatment plan will also include identifying a desired finalarrangement of the patients teeth, as well as a plurality of plannedsuccessive or intermediary tooth arrangements for moving the teeth alonga treatment path from the initial arrangement toward the selected finalarrangement. As noted, treatment can be pre-planned for administrationto a patient in a series of one or more treatment phases, with a phaseincluding a set of appliances that are worn successively by the patientto reposition the teeth through planned arrangements and eventuallytoward a selected final arrangement. The process further includesproactively generating customized treatment guidelines (Step 24), whichcan be subsequently provided to the practitioner (Step 26). Thetreatment plan includes multiple phases of treatment, with a customizedset of treatment guidelines generated that correspond to a phase of thetreatment plan. The guidelines will include detailed information ontiming and/or content (e.g., specific tasks) to be completed during agiven phase of treatment, and will be of sufficient detail to guide aless experienced practitioner, or practitioner relatively new to theparticular orthodontic treatment process, through the phase oftreatment. The process further includes providing or delivering thecustomized treatment guidelines to the practitioner (Step 26) so as tohelp instruct the practitioner as how to deliver a given phase oftreatment. As set forth above, appliances can be generated based on theplanned arrangements and will be provided to the practitioner andultimately administered to the patient (Step 28). The appliances aretypically provided and/or administered in sets or batches of appliances,such as 2, 3, 4, 5, 6, 7, 8, 9, or more appliances, but are not limitedto any particular administrative scheme. Appliances can be provided tothe practitioner concurrently with a given set of treatment guidelines,or appliances and guidelines can be provided separately.

FIG. 3 illustrates the general flow of an exemplary process 30 fordefining and generating a treatment plan, including repositioningappliances for orthodontic treatment of a patient. The steps of theprocess can be implemented as computer program modules for execution onone or more computer systems.

As an initial step, a mold or a scan of patient's teeth or mouth tissueis acquired (Step 32). This generally involves taking casts of thepatient's teeth and gums, and may in addition or alternately involvetaking wax bites, direct contact scanning, x-ray imaging, tomographicimaging, sonographic imaging, and other techniques for obtaininginformation about the position and structure of the teeth, jaws, gumsand other orthodontically relevant tissue. From the data so obtained, adigital data set is derived that represents an initial (e.g.,pretreatment) arrangement of the patient's teeth and other tissues.

The initial digital data set, which may include both raw data fromscanning operations and data representing surface models derived fromthe raw data, is processed to segment the tissue constituents from eachother (Step 34), including defining discrete dental objects. Forexample, data structures that digitally represent individual toothcrowns can be produced. In some embodiments, digital models of entireteeth are produced, including measured or extrapolated hidden surfacesand root structures.

Desired final position of the teeth, or tooth positions that are desiredand/or intended end result of orthodontic treatment, can be received,e.g., from a clinician in the form of a prescription, can be calculatedfrom basic orthodontic principles, or can be extrapolatedcomputationally from a clinical prescription (Step 36). With aspecification of the desired final positions of the teeth and a digitalrepresentation of the teeth themselves, the final position and surfacegeometry of each tooth can be specified (Step 38) to form a completemodel of the teeth at the desired end of treatment. The result of thisstep is a set of digital data structures that represents a desiredand/or orthodontically correct repositioning of the modeled teethrelative to presumed-stable tissue. The teeth and tissue are bothrepresented as digital data.

Having both a beginning position and a final position for each tooth,the process next defines a treatment path or tooth path for the motionof each tooth (Step 40). This includes defining a plurality of plannedsuccessive tooth arrangements for moving teeth along a treatment pathfrom an initial arrangement to a selected final arrangement. In oneembodiment, the tooth paths are optimized in the aggregate so that theteeth are moved in the most efficient and clinically acceptable fashionto bring the teeth from their initial positions to their desired finalpositions.

At various stages of the process, the process can include interact witha clinician responsible for the treatment of the patient (Step 42).Clinician interaction can be implemented using a client processprogrammed to receive tooth positions and models, as well as pathinformation from a server computer or process in which other steps ofprocess 300 are implemented. The client process is advantageouslyprogrammed to allow the clinician to display an animation of thepositions and paths and to allow the clinician to reset the finalpositions of one or more of the teeth and to specify constraints to beapplied to the segmented paths.

The tooth paths and associated tooth position data are used to calculateclinically acceptable appliance configurations (or successive changes inappliance configuration) that will move the teeth on the definedtreatment path in the steps specified (Step 44). Each applianceconfiguration corresponds to a planned successive arrangement of theteeth, and represents a step along the treatment path for the patient.The steps are defined and calculated so that each discrete position canfollow by straight-line tooth movement or simple rotation from the toothpositions achieved by the preceding discrete step and so that the amountof repositioning required at each step involves an orthodonticallyoptimal amount of force on the patient's dentition. As with other steps,this calculation step can include interactions with the clinician (Step42).

Having calculated appliance definitions, the process 30 can proceed tothe manufacturing step (Step 46) in which appliances defined by theprocess are manufactured, or electronic or printed information isproduced that can be used by a manual or automated process to defineappliance configurations or changes to appliance configurations.Appliances according to the treatment plan can be produced in entirety,such that each of the appliances are manufactured (e.g., prior totreatment), or can be manufactured in sets or batches. For example, insome cases it might be appropriate to manufacture an initial set ofappliances at the outset of treatment with the intention ofmanufacturing additional sets of appliances (e.g., second, third,fourth, etc.) after treatment has begun (e.g., as discussed furtherherein). For example, a first set of appliances can be manufactured andadministered to a patient. Following administration, it may be desirableto inspect the progression of the patient's teeth along the treatmentpath before manufacturing and/or administering subsequent set(s) ofappliances.

Generating and/or analyzing digital treatment plans, as discussedherein, can include, for example, use of 3-dimensional orthodontictreatment planning tools such as ClinCheck® from Align Technology, Inc.or other software available from eModels and OrthoCAD, among others.These technologies allow the clinician to use the actual patient'sdentition as a starting point for customizing the treatment plan. TheClinCheck® technology uses a patient-specific digital model to plot atreatment plan, and then uses a processed (e.g., segmented) scan of theachieved treatment outcome to assess the degree of success of theoutcome as compared to the original digital treatment plan as, asdiscussed in U.S. Pat. Nos. 7,156,661 and 7,077,647 (see also, below).

As set forth above, once a treatment plan is in place the presentinvention includes generating customized treatment guidelines that canbe provided to the dental practitioner for facilitating administrationof treatment and improving desired treatment outcomes. Since thetreatment plan typically includes a series of one or more treatmentphases, a customized set of treatment guidelines will be generated andwill typically include a set of guidelines corresponding to each phaseof the treatment plan. Treatment guidelines are provided to thepractitioner for administration of treatment to the patient. Since aphase(s) of treatment can include a set of appliances to be administeredto the patient, treatment guidelines can be provided to the practitionerconcurrently with a set of appliances, or appliances and guidelines canbe provided separately. Guidelines can include, for example, hard copies(e.g., paper copies) printed and shipped to the practitioner, or caninclude one or more electronic copies transmitted to the practitionerover a network, for example, by email or by incorporation into othernetwork-based treatment planning tools (e.g., ClinCheck®).

As a treatment plan will typically include a series of one or moreappointments, guidelines will typically include one or more recommendedpatient/practitioner appointments that may include suggested timing forthe appointments. Suggested timing can be specific and may moreparticularly identify a date or specific date range for scheduling oneor more appointments, or can be more generalized and for eachappointment may list a broader timing range (e.g., 1 week appointment, 2week, 3 week, etc.). Appointment timing can be identified to coincidewith another treatment event, such as administering an appliance or setof appliance, or wearing of an appliance(s) by the patient for a periodof time. Guidelines corresponding to a particular appointment caninclude a list of recommended tasks to be completed during thepractitioner's appointment with the patient. Non-exclusive examples ofgeneral tasks that may need to be performed at a given appointment caninclude appliance delivery and administration to the patient; toothmodifications such as extractions, interproximal reduction (IPR),periodontal evaluation, and the like; placement/removal ofattachment(s); auxiliary placement; general monitoring and compliance;treatment progress tracking; finishing appointment or finalization oftreatment (e.g., refinement evaluation or final impression and/or orderretainer); retainer administration to the patient; retainer maintenance;cleaning appointments; etc. Since the guidelines provided to thepractitioner will be specifically customized to the individual patient,the guidelines will not only include identification of the tasks to becompleted but will typically include specific details and/orinstructions, customized to the individual patient, that will help guidethe practitioner through the identified tasks during an appointment withthe patient. In some instances, the information provided in thecustomized guidelines can be further tailored to the practitioner toprovide the appropriate level of detail, content, and the like. Forexample, information provided to the practitioner, such as amount ofdetail in the identified tasks, can be selected based on the experiencelevel of the practitioner or preferences of the practitioner, e.g.,including preferences specified by the practitioner.

As set forth above, guidelines can include, for example, hard copies(e.g., paper copies) printed and shipped to the practitioner, or caninclude one or more electronic copies transmitted to the practitionerover a network. In addition to recommended appointments, recommendedtasks, and specific instructions or guidance on how tasks may becompleted, guidelines according to the present invention can includeadditional information and/or details that can further facilitate apractitioner in administering treatment to the patient, such as supportcontact information, direction to additional training materials, productordering information, and the like. For example, where guidelines areprovided electronically, such as on-line, additional materials caninclude one or more hyperlinks, such as JIT troubleshooting links,support links and/or numbers, e-mail links, order placement links, linksto ClinCheck sharing modules, training modules or information, etc.

FIG. 4 shows a screen shot 50 illustrating a graphical representation ofelectronically provided guidelines corresponding to a treatment planaccording to an embodiment of the present invention. A user can select agiven appointment (example “Appointment #1” is illustrated) from anappointment menu 52 and customized set of treatment guidelines 54 aredisplayed corresponding to the selected appointment. The guidelines 54can include a general description of the selected appointment (e.g.,“purpose”) so as to communicate to the practitioner general goals to beaccomplished at the appointment. The guidelines 54 can further include alist of specific tasks to be completed. Specific tasks can be selectedby the practitioner for further viewing of more specific details, suchas by selecting a drop down menu that provides more detailed andspecific instructions to guide the practitioner through administrationof the tasks. For a given appointment, a graphical representation of thepatient's projected arrangement of teeth 56 at a given appointment/timecan be provided and incorporated into the interface for delivering theguidelines or task instructions. For example, as shown, specificidentification 58 of interproximal reduction areas may be shown and cancontain details on the reduction to be performed. Attachment locations60, 62 can also be illustrated on the representation 56 to facilitatetreatment administration. Additional views 64 (e.g., thumbnail views) ofthe patients teeth can also be provided for selection by thepractitioner. Providing the guidelines and instructions along with suchgraphical illustrations can advantageously help to more effectivelycommunicate task instructions to the practitioner at the appropriatetreatment time and more effectively manage treatment.

FIG. 5A shows a screen shot 65 illustrating a graphical representationof electronically provided guidelines according to another embodiment ofthe present invention. As above, a user can select a given appointment(e.g., “Appointment 1”, “Appointment 2”, etc.) from an appointment menu66 (e.g., appointment menu bar) for viewing of information includingcustomized guidelines corresponding to the selected appointment.Additionally, the appointment menu 66 can include an option to select anoverview or general information on the treatment plan in general, whichcan be graphically represented as a treatment plan overview tab 67 inthe menu 66. Selection of the overview 67 can further display overviewinformation 68 providing information on the treatment plan in general.Information 68 can include, for example, a list of tasks to be completedthroughout the treatment (or portion thereof) of the patient.Specifically identified task may be linked to other files so as toprovide additional detailed information on a given task upon selection.As above, a graphical representation 69 of the patient's teeth can bepresented illustrating projected tooth positions at a given time orappointment.

FIG. 5B shows a screen shot 70 illustrating a graphical representationof electronically provided guidelines corresponding to a treatment planaccording to another embodiment of the present invention. Customizedtreatment guidelines 72 are shown provided according to the treatmentplan. As above, drop down options 74 are provided that allow thepractitioner to select a given task in order to view more detailedinstructions and information for guidance on how to administer the task.The practitioner can toggle between various appointments by using anappointment menu 76 (e.g., menu bar), where a given appointmentaccording to the treatment plan can be selected, thereby providing alist of corresponding tasks to be completed at the selected appointment.Additionally, a graphical representation 78 of the patient's projectedtooth arrangement at a given appointment or time can be displayed andmay include a view menu 79 for selecting different graphical views ofthe patients teeth. Additional animation and/or instructions can beincluded or incorporated into a graphical representation of thepatient's teeth to further communicate treatment guidelines and tasks.

FIG. 6 is a simplified block diagram of a data processing system 80 thatmay be used in executing methods and processes described herein. Thedata processing system 80 typically includes at least one processor 82that communicates with a number of peripheral devices via bus subsystem84. These peripheral devices typically include a storage subsystem 86(memory subsystem 88 and file storage subsystem 94), a set of userinterface input and output devices 98, and an interface to outsidenetworks 96, including the public switched telephone network. Thisinterface is shown schematically as “Modems and Network Interface” block96, and is coupled to corresponding interface devices in other dataprocessing systems via communication network interface 104. Dataprocessing system 80 can include, for example, one or more computers,such as a personal computer, workstation, mainframe, and the like.

The user interface input devices 98 are not limited to any particulardevice, and can typically include, for example, a keyboard, pointingdevice, mouse, scanner, interactive displays, etc. Similarly, varioususer interface output devices can be employed in a system of theinvention, and can include, for example, one or more of a printer,display (e.g., visual, non-visual) system/subsystem, controller,projection device, audio output, and the like.

Storage subsystem 86 maintains the basic required programming, includingcomputer readable media having instructions (e.g., operatinginstructions, etc.), and data constructs. The program modules discussedherein are typically stored in storage subsystem 86. Storage subsystem86 typically comprises memory subsystem 88 and file storage subsystem94. Memory subsystem 88 typically includes a number of memories (e.g.,RAM 90, ROM 92, etc.) including computer readable memory for storage offixed instructions, instructions and data during program execution,basic input/output system, etc. File storage subsystem 94 providespersistent (non-volatile) storage for program and data files, and caninclude one or more removable or fixed drives or media, hard disk,floppy disk, CD-ROM, DVD, optical drives, and the like. One or more ofthe storage systems, drives, etc may be located at a remote location,such coupled via a server on a network or via the Internet's World WideWeb. In this context, the term “bus subsystem” is used generically so asto include any mechanism for letting the various components andsubsystems communicate with each other as intended and can include avariety of suitable components/systems that would be known or recognizedas suitable for use therein. It will be recognized that variouscomponents of the system can be, but need not necessarily be at the samephysical location, but could be connected via various local-area orwide-area network media, transmission systems, etc.

Scanner 100 includes any means for obtaining an image of a patient'steeth, some of which have been described herein above, which can beobtained either from the patient or from treating professional, such asan orthodontist, and includes means of providing the imagedata/information to data processing system 80 for further processing. Insome embodiments, scanner 100 may be located at a location remote withrespect to other components of the system and can communicate image dataand/or information to data processing system 80, for example, via anetwork interface 104. Fabrication system 102 fabricates dentalappliances based on a treatment plan, including data set informationreceived from data processing system 80. Fabrication machine 102 can,for example, be located at a remote location and receive data setinformation from data processing system 80 via network interface 104.

It is understood that the examples and embodiments described herein arefor illustrative purposes and that various modifications or changes inlight thereof will be suggested to persons skilled in the art and are tobe included within the spirit and purview of this application and thescope of the appended claims. Numerous different combinations arepossible, and such combinations are considered to be part of the presentinvention.

What is claimed is:
 1. A system for determining recommended timing foradministration of at least one orthodontic appliance to a patient'steeth, the system comprising: one or more processors; and memorycomprising instructions that, when executed by the one or moreprocessors, cause the system to: generate a plurality of digital modelsof the patient's teeth, each digital model corresponding to one of aplurality of planned successive tooth arrangements for moving the teethalong a treatment path from an initial arrangement toward a selectedfinal arrangement, and generate customized treatment guideline databased on the plurality of digital models, the customized treatmentguideline data comprising recommended timing for administration of atleast one orthodontic appliance of a plurality of orthodontic appliancesto the patient's teeth, wherein the plurality of orthodontic appliancesare shaped to move the teeth at least partially along the treatment pathfrom the initial arrangement toward the selected final arrangement. 2.The system of claim 1, further comprising a display configured todisplay the customized treatment guideline data.
 3. The system of claim2, wherein the display is configured to display a graphicalrepresentation of a projected tooth arrangement corresponding to one ofthe plurality of planned successive tooth arrangements.
 4. The system ofclaim 1, wherein the customized treatment guideline data furthercomprises recommended timing for one or more treatment events.
 5. Thesystem of claim 4, wherein the one or more treatment events comprise atooth modification, the tooth modification comprising one or more of anextraction, interproximal reduction (IPR), placement of an attachment,or removal of an attachment.
 6. The system of claim 4, wherein the oneor more treatment events comprise one or more of tracking treatmentprogress, finalization of treatment, administration of a retainer, orcleaning.
 7. The system of claim 4, wherein the customized treatmentguideline data comprises instructions for performing the one or moretreatment events.
 8. The system of claim 1, wherein the recommendedtiming comprises appointment timing for scheduling one or moreappointments for completing one or more treatment tasks, the one or moretreatment tasks comprising the administration of the at least oneorthodontic appliance.
 9. The system of claim 8, further comprising adisplay configured to provide a user interface, wherein the userinterface is configured to display the appointment timing for the one ormore appointments and the one or more treatment tasks to be completed atthe one or more appointments.
 10. The system of claim 1, wherein theinstructions further cause the system to generate fabricationinstructions for manufacturing the plurality of orthodontic appliancesbased on the treatment plan data, wherein the fabrication instructionsare generated prior to administration of any of the plurality oforthodontic appliances to the patient's teeth.
 11. A method fordetermining recommended timing for administration of at least oneorthodontic appliance to a patient's teeth, the method comprising:generating, with one or more processing devices, a plurality of digitalmodels of the patient's teeth, each digital model corresponding to oneof a plurality of planned successive tooth arrangements for moving theteeth along a treatment path from an initial arrangement toward aselected final arrangement; and generating, with the one or moreprocessing devices, customized treatment guideline data based on theplurality of digital models, the customized treatment guideline datacomprising recommended timing for administration of at least oneorthodontic appliance of a plurality of orthodontic appliances to thepatient's teeth, wherein the plurality of orthodontic appliances areshaped to move the teeth at least partially along the treatment pathfrom the initial arrangement toward the selected final arrangement. 12.The method of claim 11, further comprising displaying the customizedtreatment guideline data on a display.
 13. The method of claim 12,wherein displaying the customized treatment guideline data comprisesdisplaying a graphical representation of a projected tooth arrangementcorresponding to one of the plurality of planned successive tootharrangements.
 14. The method of claim 11, wherein the customizedtreatment guideline data further comprises recommended timing for one ormore treatment events.
 15. The method of claim 14, wherein the one ormore treatment events comprise a tooth modification, the toothmodification comprising one or more of an extraction, interproximalreduction (IPR), placement of an attachment, or removal of anattachment.
 16. The method of claim 14, wherein the one or moretreatment events comprise one or more of tracking treatment progress,finalization of treatment, administration of a retainer, or cleaning.17. The method of claim 14, wherein the customized treatment guidelinedata comprises instructions for performing the one or more treatmentevents.
 18. The method of claim 11, wherein the recommended timingcomprises appointment timing for scheduling one or more appointments forcompleting one or more treatment tasks, the one or more treatment taskscomprising the administration of the at least one orthodontic appliance.19. The method of claim 18, further comprising providing a userinterface on a display, wherein the user interface is configured todisplay the appointment timing for the one or more appointments and theone or more treatment tasks to be completed at the one or moreappointments.
 20. The method of claim 11, further comprising generating,with the one or more processors, fabrication instructions formanufacturing the plurality of orthodontic appliances based on thetreatment plan data, wherein the fabrication instructions are generatedprior to administration of any of the plurality of orthodonticappliances to the patient's teeth.